TECHNICAL COMMITTEE ON EMERGENCY POWER ... - NFPA

TECHNICAL COMMITTEE ON EMERGENCY POWER SUPPLIES

Second Draft Meeting Agenda for NFPA 110 and NFPA 111

June 16 and 18, 2020

Telephone/Web Conference

06-20-01 Call to Order & Welcome

06-20-02 Introduction of Committee Members (Attachment A)

06-20-03 Approval of Previous Meeting Minutes (Attachment B)

06-20-04 Chairs Remarks

06-20-05 Staff Presentation

06-20-06 Task Group Reports and Review of Public Comments (Attachment C)

06-20-07 Old Business

06-20-08 New Business

06-20-09 Adjournment

Attachment A: Technical Committee Roster

Address List No PhoneEmergency Power Supplies EPS-AAA

National Electrical Code®

Christopher Coache06/10/2020

EPS-AAA

Dan Chisholm, Sr.

ChairMGI Systems, Inc.PO Box 2474Winter Park, FL 32790-2474Alternate: Dan Chisholm, Jr.

IM 10/1/1993EPS-AAA

Ernest E. Allen

PrincipalThe Doctors Company5001 Mayfield Road, Suite L55Lyndhurst, OH 44124NFPA Health Care Section

I 7/1/1990

EPS-AAA

Kenneth A. Cotton

PrincipalUS Energy/Donlee CropNetwork Operation Center140 East Stetson AveSuite 309Hemet, CA 92543Alternate: Joshua Dugger

M 10/1/1999EPS-AAA

David A. Dagenais

PrincipalPartners/Wentworth-Douglass Hospital789 Central AvenueDover, NH 03820

U 08/09/2012

EPS-AAA

Richard L. Day

PrincipalMichigan State Fire Marshal's Office207 Jackson StreetAllegan, MI 49010-9156

E 03/03/2014EPS-AAA

Thomas A. Domitrovich

PrincipalEaton Corporation114 Old State RoadEllisville, MO 63021Alternate: Bruce Gordon Campbell

M 04/02/2020

EPS-AAA

Timothy Evans

PrincipalUL, LLC Canada7 Underwriters RoadToronto, ON M1R 3A9 CanadaAlternate: Robert D. Osborne

RT 12/06/2019EPS-AAA

Louis J. Feller

PrincipalUS Army Corps of EngineersMedical Facilities Center4735 E. Marginal Way SSeattle, WA 98134-2329

U 03/03/2014

EPS-AAA

Jason M. Fisher

PrincipalSolar Technical Consulting LLC344 Key West DriveCharlottesville, VA 22911-8426

SE 04/02/2020EPS-AAA

James R. (Skip) Gregory

PrincipalHealth Facility Consulting4128 Zermatt DriveTallahassee, FL 32303-2252Florida Agency for Health Care Administration

E 3/21/2006

EPS-AAA

Ross M. Hardy

PrincipalOrlando Health Dr. P. Phillips HospitalFacilities Mgr Engineering Dr. Phillips Hospital9400 Turkey Lake RoadOrlando, FL 32819

U 07/14/2004EPS-AAA

Jonathan Hartsell

PrincipalRodgers5701 North Sharon Amity RoadCharlotte, NC 28215

IM 07/29/2013

EPS-AAA

Timothy Hurd

PrincipalNEC Energy Solutions155 Flanders RoadWestborough, MA 01581

M 04/02/2020

1




EPS-AAA

Oleh Kowalskyj

PrincipalU.S. Department of Veterans AffairsVeterans Health Administration (10NAS)810 Vermont Avenue, NWWashingston, DC 20420US Department of Veterans AffairsAlternate: Gary Krauch

U 04/04/2017EPS-AAA

Pouyan Layegh

PrincipalUniversity of Texas MD Anderson Cancer Center3126 Barrons WaySugar Land, TX 77479

U 11/30/2016

EPS-AAA

Chad E. Loomis

PrincipalCornell University2336 South Balch HallIthaca, NY 14853

U 3/2/2010EPS-AAA

Alan Manche

PrincipalSchneider Electric1601 Mercer RoadLexington, KY 40511-1025Alternate: Ronald A. Schroeder

M 10/23/2003

EPS-AAA

Daniel J. O'Connor

PrincipalJENSEN HUGHES4 Overlook PointLincolnshire, IL 60069-4302Alternate: Eric Camiel

SE 1/1/1984EPS-AAA

Gary L. Olson

PrincipalkW Rx, LLC12979 Killdeer Street NWMinneapolis, MN 55448-7018

SE 08/09/2011

EPS-AAA

Chris Paxton

PrincipalBloom Energy Corporation4353 North First StreetSan Jose, CA 95134

M 04/02/2020EPS-AAA

Steve R. Sappington

PrincipalCaterpillar Inc.175 Cutstone CourtFayetteville, GA 30215-6206

M 08/11/2014

EPS-AAA

Michael L. Savage, Sr.

PrincipalMarion County Building Safety2710 E. Silver Springs Blvd.Ocala, FL 34470

E 08/08/2019EPS-AAA

Randy H. Schubert

PrincipalEricsson444 Hoes LanePiscataway, NJ 08854-4104Alliance for Telecommunications Industry SolutionsAlternate: Richard G. Kluge

U 12/08/2015

EPS-AAA

Ronald M. Smidt

PrincipalAtrium HealthPO Box 901Troutman, NC 28166American Society for Healthcare EngineeringAlternate: Joshua Brackett

U 7/24/1997EPS-AAA

David Stymiest

PrincipalSmith Seckman Reid, Inc.2995 Sidco DriveNashville, TN 37204

SE 1/12/2000

2




EPS-AAA

Timothy P. Windey

PrincipalCummins Power Generation1400 73rd Avenue NEMinneapolis, MN 55432-3702Alternate: Rich Scroggins

M 08/03/2016EPS-AAA

Stephen Works

PrincipalBlanchard Machinery3151 Charleston HighwayWest Columbia, SC 29172

IM 12/06/2017

EPS-AAA

James Hunt

Voting AlternateHostrat Inc.5723 East AlkiSpokane, WA 99212Electrical Generating Systems Association

M 08/03/2016EPS-AAA

David C. Skiba

Voting AlternateSargent & Lundy LLC55 East Monroe StreetSuite 2710Chicago, IL 60603-5821

SE 10/28/2014

EPS-AAA

Joshua Brackett

AlternateBaptist Health5525 Studer RoadLittle Rock, AR 72223American Society for Healthcare EngineeringPrincipal: Ronald M. Smidt

U 12/06/2019EPS-AAA

Eric Camiel

AlternateJENSEN HUGHES117 Metro Center BoulevardSuite 1002Warwick, RI 02886JENSEN HUGHESPrincipal: Daniel J. O'Connor

SE 12/07/2018

EPS-AAA

Bruce Gordon Campbell

AlternateEaton Corporation130 Commonwealth DriveWarrendale, PA 15086Principal: Thomas A. Domitrovich

M 04/02/2020EPS-AAA

Dan Chisholm, Jr.

AlternateMGI Systems, Inc.412 Page StreetOrlando, FL 32806Principal: Dan Chisholm, Sr.

IM 7/14/2004

EPS-AAA

Joshua Dugger

AlternateFacility Shield International14419 Veterans WayMoreno Valley, CA 92553-9059Principal: Kenneth A. Cotton

M 10/29/2012EPS-AAA

Richard G. Kluge

AlternateEricsson1 Ericsson DrivePiscataway, NJ 08854Alliance for Telecommunications Industry SolutionsPrincipal: Randy H. Schubert

U 12/08/2015

EPS-AAA

Gary Krauch

AlternateVirginia New England Healthcare System2000 Springs RoadBuilding 61Bedford, MA 01730US Department of Veterans AffairsPrincipal: Oleh Kowalskyj

U 04/04/2017EPS-AAA

Robert D. Osborne

AlternateUL LLC12 Laboratory DriveResearch Triangle Park, NC 27709-3995Principal: Timothy Evans

RT 12/06/2019

3




EPS-AAA

Ronald A. Schroeder

AlternateASCO Power Technologies, LP160 Park AvenueFlorham Park, NJ 07932Principal: Alan Manche

M 1/10/2008EPS-AAA

Rich Scroggins

AlternateCummins Power Generation3850 North Victoria StreetShoreview, MN 55126-2907Principal: Timothy P. Windey

M 10/28/2014

EPS-AAA

William H. Everard

Member EmeritusEverard Mid Atlantic Inc.8743 Center RoadSpringfield, VA 22152-2234

SE 1/1/1979EPS-AAA

Christopher Coache

Staff LiaisonNational Fire Protection AssociationOne Batterymarch ParkQuincy, MA 02169-7471

8/7/2011

4

Attachment B: Previous Meeting Minutes

- 1 -

8/14/2019

To: Christopher Coache

re: 2022 Edition of NFPA 110 and NFPA 111

First Draft Meeting / Session Minutes

8/13/19

19-8-1: Call to Order @ 0800 / Dan Chisholm, Chairman / Secretary (Steve Works / Blanchard)

19-8-2: Introduction of Members and Guests (reference Members sign-in)

Guest Log: Steve Burris and Craig Huling (Petroleum Recovery Services, Inc.), John

Sharpe (Generac Power Systems, Inc.), Robert Osbourne (UL)

19-8-3: Approval of Previous Meeting Minutes – accepted @ 0810

19-8-4: NFPA Staff Presentation / Christopher Coates (NFPA) 0810-0830

19-8-5: Task Group Reports – Steve Sappington (Caterpillar) delivers fuel testing synopsis for

committee review and record.

19-8-6: Review of Public Inputs

1) Order of review as presented in Meeting Agenda.

2) PI Task Groups were formed @ 1130 (lunch) to facilitate sub-topics and present

recommendations to the Committee as follows:

a. Fuel Cells – Ron Smidt (chair), David Stymiest, Jonathan Hartsell, Alan Manche

b. Battery Concerns – Ross Hardy (chair), Randy Schubert, Steve Works, Steve

Sappington

c. Continuation of Agenda – Pouyan Layegh (chair), Ronald Schroeder, Ernest

Allen, Skip Gregory

3) Meeting re-convened @ 1300 to review the PI task group’s findings and process PI’s

accordingly.

4) Meeting paused @ 1830; special task group was formed to review PI’s relating to

Standards for Testing (8.4) as follows: Ron Smidt (chair), Oleh Kowalskvi, Jonathan

Hartsell, Randy Schubert, Ross Hardy, Alan Manche, Pouyan Layegh. This meeting

ended @ 2145.

8/14/19

5) Meeting re-convened @ 0800. Opening session reviews the 8.4 task group’s work.

- 2 -

6) Remaining PI’s for NFPA 110 & 111 were addressed (ended @ 1200)

19-8-7: Old Business – N/A

19-8-8: New Business – Alan Manche: NFPA 110 committee should consider how to address

usability of NFPA 110 (follow-up from upcoming public comments).

19-8-9: Meeting Adjourned @ 1215.

Respectfully Submitted,

Steve Works

Blanchard Machinery / Power Systems

[email protected]

mailto:[email protected]

Attachment C: NFPA 110 Public

Comment Report

Public Comment No. 33-NFPA 110-2020 [ Section No. 5.1.1 [Excluding any Sub-

Sections] ]

The following energy sources shall be permitted to be used for the emergency power supply (EPS):

(1)

(2)

(3)

(4)

Statement of Problem and Substantiation for Public Comment

Allows use of a energy source that is highly utilized in Fuel cells.

Related Item

• CI 9

Submitter Information Verification

Submitter Full Name: Ronald Smidt

Organization: Atrium Health

Affiliation: ASHE

Street Address:

City:

State:

Zip:

Submittal Date: Wed May 06 11:30:07 EDT 2020

Committee: EPS-AAA

* Liquid petroleum products at atmospheric pressure as specified in the appropriate ASTM standardsand as recommended by the engine manufacturer

* Liquefied petroleum gas (liquid or vapor withdrawal) as specified in the appropriate ASTM standardsand as recommended by the engine manufacturer

* Natural or synthetic gas

Hydrogen gas

National Fire Protection Association Report https://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPar...

1 of 120 5/7/2020, 4:56 PM


Sections] ]

Energy converters shall consist only of rotating equipment as indicated in 5.2.4.


As requested in Committee Input 9, this allows other technology other than reciprocating engines to be utilized.

Related Public Comments for This Document

Related Comment Relationship

Public Comment No. 35-NFPA 110-2020 [New Section after 5.2.1.1]

Public Comment No. 37-NFPA 110-2020 [New Section after 5.2.5]

Related Item

• CI-9




Street Address:

City:

State:

Zip:


Committee: EPS-AAA


2 of 120 5/7/2020, 4:56 PM

Public Comment No. 35-NFPA 110-2020 [ New Section after 5.2.1.1 ]

TITLE OF NEW CONTENT 5.2.1.1.1

Fuel Cells systems utilized as Level 1 energy converters shall be listed or field labeled to ANSI/CSA FC1

Additional Proposed Changes

File Name Description Approved

NFPA_110_Section_5_Draft_for_submition_w_comments_05-06-2020.docx


Task group response to CI 9



Public Comment No. 33-NFPA 110-2020 [Section No. 5.1.1 [Excluding any Sub-Sections]]


Public Comment No. 36-NFPA 110-2020 [Section No. 5.2.4]

Public Comment No. 37-NFPA 110-2020 [New Section after 5.2.5]

Related Item

• CI 9




Street Address:

City:

State:

Zip:


Committee: EPS-AAA


3 of 120 5/7/2020, 4:56 PM

Note the following was produced by a Task group in response to Chair request on CI-9 Change are highlighted and total text will be up loaded with each submission. This is only CH 5 changes 5.2 Energy Converters — General.

5.2.1 Energy converters shall consist only of rotating equipment as indicated in 5.2.4.

5.2.1.1 Level 1 energy converters shall be representative products built from components that have proven

compatibility and reliability and are coordinated to operate as a unit.

5.2.1.1.1 Fuel Cell systems utilized as Level 1 energy converters shall be listed or field labeled to ANSI / CSA

FC1 .

5.2.1.2 The capability of the energy converter, with its controls and accessories, to survive without damage from

common and abnormal disturbances in actual load circuits shall be demonstrable demonstrated by tests on

separate prototype models, or by acceptable tests on the system components as performed by the component

suppliers, or by tests performed in the listing process for the assembly.

5.2.1.3 A separate prototype unit for a rotating type EPS shall be permitted to be utilized in a Level 1 or Level 2

installation, provided that all prototype tests produce no deleterious effects on the unit, and the authority having

jurisdiction, the owner, and the user are informed that the unit is the prototype test unit.

5.2.2* The A rotating equipment prototype unit shall be tested with all typical prime mover accessories that

affect its power output in place and operating, including, but not limited to, the following:

(1) Battery-charging alternator

(2) Water pump

(3) Radiator fan for unit-mounted radiators or oil coolers (or comparable load)

(4) Fuel pump and fuel filter(s)

(5) Air filter(s)

(6) Exhaust mufflers or restriction simulating the maximum backpressure recommended by the prime mover

manufacturer

5.2.3 The energy converter for Level 1 systems shall be specifically designed, assembled, and tested to ensure

system operation under the following conditions:

(1) Short circuits

(2) Load surges due to motor starting

(3) Elevator operations

(4) Silicon controlled rectifier (SCR) controllers

(5) X-ray Imaging equipment

(6) Overspeed, overtemperature, or overload

(7) Adverse environmental conditions

5.2.4 EPS

5.2.4.1 EPS utilizing Rrotating equipment shall consist of a generator driven by one of the following prime mover

types:

(1) Otto cycle (spark ignited)

(2) Diesel cycle

(3) Gas turbine cycle

5.2.4.2 EPS utilizing fuel cell systems shall consist of one or more of the following types:

(1) Proton exchange membrane (PEMFC)

(2) Solid oxide (SOFC)

(3) Molten carbonate (MCFC)

(4) Phosphoric acid (PAFC)

(5) Alkaline (AFC)

5.2.4.2.3 For EPS utilizing rotating equipment, Oother types of prime movers and their associated equipment

meeting the applicable performance requirements of this standard shall be permitted, if acceptable to the

authority having jurisdiction.

5.2.4. 2.3 Where used for Level 1 applications, the a prime mover shall not mechanically drive any equipment

other than its operating accessories and its generator. A fuel cell system shall not energize any other equipment

other than its operating accessories necessary to provide power for the Level 1 application.

5.2.5 The EPS shall be installed in accordance with NFPA 70, National Electrical Code.

5.2.5.1A fuel cell system EPS shall also be installed in accordance with NFPA 853, Installation Standard for

Stationary Fuel Cell Power Systems.

5.3 Energy Converters — Temperature Maintenance.

5.3.1 The EPS shall be heated as necessary to maintain the water jacket and battery temperature determined by

the EPS manufacturer for cold start and load acceptance for the type of EPSS.

5.3.1.1 A fuel cell system type EPS shall be provided with a thermal management system determined sufficient

in accordance with its listing and intended installation location for cold start, if applicable, and load acceptance

for the type of EPSS.

5.3.2 All prime mover heaters shall be automatically deactivated while the prime mover is running. (For

combustion turbines, see 5.3.5.)

5.3.2.1 Air-cooled prime movers shall be permitted to employ a heater to maintain lubricating oil temperature as

recommended by the prime mover manufacturer.

5.3.3 Antifreeze protection shall be provided according to the manufacturer's recommendations.

5.3.4 Ether-type starting aids shall not be permitted.

5.3.5 The ambient air temperature in the EPS equipment room or outdoor housing containing Level I rotating

equipment shall be not less than 4.5°C (40°F).

5.3.6 Fuel cell systems EPS shall be provided with a thermal management system in accordance with its listing.

Fuel cell system EPS shall be installed in accordance with their its listing and manufacturer’s recommended

installation instructions and specifications.

*A5.3.6 The type of thermal management system utilized by a fuel cell system will will be permitted to vary

depending upon the type of fuel cell system and the limitations of its intended installation (e.g. outdoors or

indoors in a controlled environment). Therefore, the fuel cell system is to be installed in accordance with the

manufacturer’s recommended installation instructions and system specifications, and in accordance with its

listing. The ability of the thermal management system to maintain the fuel cell system within its operating

parameters in accordance with its intended installation environment are evaluated as part of its listing.

5.4* Energy Converters — Capacity. The energy converters shall have the required capacity and response to

pick up and carry the load within the time specified in Table 4.1(b) after loss of primary power.

5.5 Energy Converters — Fuel Supply.

5.5.1 The fuel supplies specified in 5.1.1(1) and 5.1.1(2) for energy converters intended for Level 1 use shall not

be used for any other purpose. (For fuel system requirements, see Section 7.9.)

5.5.1.1 Enclosed fuel tanks shall be permitted to be used for supplying fuel for other equipment, provided that

the drawdown level or other passive features are designed into the fuel system to guarantee that the required

quantity of fuel is available for the EPSS.

Commented [CP1]: Do we need to separate rotating equipment vs. fuel cells for clarification between the two?

Commented [RS2R1]: Yes iI think we do.

Commented [RS3]: This section is specific to rotating equipment. I am struggling with how to seprate out the rotation from the fuel cell.

Commented [CP4]: Some EPS fuel cell systems are not intended to be cold started due to long ramp times to full power.

5.5.1.2 Vapor-withdrawal LP-Gas systems shall have a dedicated fuel supply.

5.5.2* A low-fuel sensing switch shall be provided for the main fuel supply tank(s) using the energy sources

listed in 5.1.1(1) and 5.1.1(2) to indicate when less than the minimum fuel necessary for full load running, as

required by the specified class in Table 4.1(a), remains in the main fuel tank.

5.5.3* The main fuel tank shall have a minimum capacity of at least 133 percent of either the low-fuel sensor

quantity specified in 5.5.2 or the quantity required to support the duration of run specified in Table 4.1(a).

5.6 Rotating Equipment.

5.6.1 General. Prime movers and accessories shall comply with NFPA 37, Standard for the Installation and Use

of Stationary Combustion Engines and Gas Turbines, except as modified in this standard.

5.6.2 Prime Mover Ratings. Proper derating factors, such as altitudes, ambient temperature, fuel energy

content, accessory losses, and site conditions as recommended by the manufacturer of the generator set shall

be used in determining whether or not brake power meets the connected load requirements.

5.6.3 Prime Mover Accessories.

5.6.3.1 Governors shall maintain a bandwidth of rated frequency for any constant load (steady-state condition)

that is compatible with the load.

5.6.3.1.1 The frequency droop between no load and full load shall be within the range for the load.

5.6.3.1.2 The frequency dip upon one-step application of the full load shall not be outside the range for the load,

with a return to steady-state conditions occurring within the requirements of the load.

5.6.3.2 Solenoid valves, where used, both in the fuel line from the supply or day tank closest to the generator set

and in the water-cooling lines, shall operate from battery voltage.

5.6.3.2.1 Solenoid valves shall have a manual (nonelectric) operation, or a manual bypass valve shall be

provided.

5.6.3.2.1.1 The manual bypass valve shall be visible and accessible and its purpose identified.

5.6.3.2.1.2 The fuel bypass valve shall not be the valve used for malfunction or emergency shutdown.

5.6.3.3 The prime mover shall be provided with the following instruments:

(1) Oil pressure gauge to indicate lubricating oil pressure when a pressurized lubricating system is provided

(2) Temperature gauge to indicate cooling medium temperature when a liquid medium cooling system is used

(3) Hour meter to indicate actual total running time

(4) Battery-charging meter indicating performance of prime mover–driven battery charging means

(5) Other instruments as recommended or provided by the prime mover manufacturer where required for

maintenance

5.6.3.4 The instruments required in 5.6.3.3(1) through

5.6.3.3(4) shall be placed on an enclosed panel, located in proximity to or on the energy converter, in a location

that allows maintenance personnel to observe them readily. The enclosed panel shall be mounted by means of

antishock vibration mountings if mounted on the energy converter.

5.6.3.5 All wiring for connection to the control panel shall be harnessed or flexibly enclosed, shall be securely

mounted on the prime mover to prevent chafing and vibration damage, and shall terminate at the control panel

in an enclosed box or panel. (For control panel requirements, see 5.6.5.)

5.6.3.6 The generator set shall be fitted with an integral accessory battery charger, driven by the prime mover

and automatic voltage regulator, and capable of charging and maintaining the starting battery unit (and control

battery, where used) in a fully charged condition during a running condition.

5.6.3.6.1 A battery charger driven by the prime mover shall not be required, provided the automatic battery

charger has a highlow rate capable of fully charging the starting battery during running conditions as specified in

5.6.3.6.

5.6.4 Prime Mover Starting Equipment.

5.6.4.1 Starting Systems. Starting shall be accomplished using either an electric starter or a stored energy

starting system.

5.6.4.1.1 Electric starter systems shall start using a positive shift solenoid to engage the starter motor and to

crank the prime mover for the period specified in 5.6.4.2 without overheating, at a speed at least equal to that

recommended by the manufacturer of the prime mover and at the lowest ambient temperature anticipated at the

installation site.

5.6.4.1.2 Other types of stored energy starting systems (except pyrotechnic) shall be permitted to be used where

recommended by the manufacturer of the prime mover and subject to approval of the authority having

jurisdiction, under the following conditions:

(1) Where two complete periods of cranking cycles are completed without replacement of the stored energy

(2) Where a means for automatic restoration from the emergency source of the stored energy is provided

(3) Where the stored energy system has the cranking capacity specified in 5.6.4.2.1

(4) Where the stored energy system has a “black start” capability in addition to normal discharge capability

5.6.4.2* Otto or Diesel Cycle Prime Movers. For otto or diesel cycle prime movers, the type and duration of the

cranking cycle shall be as specified in Table 5.6.4.2.

5.6.4.2.1 A complete cranking cycle shall consist of an automatic crank period of approximately 15 seconds

followed by a rest period of approximately 15 seconds. Upon starting and running the prime mover, further

cranking shall cease.

5.6.4.2.2 Two means of cranking termination shall be utilized so that one serves as backup to prevent

inadvertent starter engagement.

5.6.4.2.3 Otto cycle prime movers of 15 kW and lower and all diesel prime movers shall be permitted to use

continuous cranking methods.

5.6.4.3* Number of Batteries. Each prime mover shall be provided with both of the following:

(1) Storage battery units as specified in Table 5.6.4.2

(2) A storage rack for each battery or battery unit

Table 5.6.4.2 Starting Equipment Requirements

Starting Equipment Requirements

_________________________________________________________________________________________

Level 1 Level 2

(a) Battery unit X X

(b) Battery certification X NA

(c) Cycle cranking X or O O

(d) Cranking limiter time-outs

Cycle crank (3 cycles) 75 sec 75 sec

Continuous crank 45 sec 45 sec

(e) Float-type battery charger X X

dc ammeter X X

dc voltmeter X X

(f) Recharge time 24 hr 36 hr

(g) Low battery voltage alarm contacts X X

______________________________________________________________________________

X: Required. O: Optional. NA: Not applicable

5.6.4.4* Size of Batteries. The battery unit shall have the capacity to maintain the cranking speed

recommended by the prime mover manufacturer through two complete periods of cranking limiter time-outs as

specified in Table 5.6.4.2, item (d).

5.6.4.5 Type of Battery. The battery shall be of the nickel cadmium or lead-acid type.

5.6.4.5.1* Lead-acid batteries shall be furnished as charged when wet. Drain-dry batteries or dry-charged lead-

acid batteries shall be permitted.

5.6.4.5.2 When furnished, vented nickel-cadmium batteries shall be filled and charged and shall have listed flip-

top, flame arrester vent caps.

5.6.4.5.3 The manufacturer shall provide installation, operation, and maintenance instructions and, for batteries

shipped dry, electrolyte mixing instructions.

5.6.4.5.4 Batteries shall not be installed until the battery charger is in service.

5.6.4.5.5 All batteries used in this service shall have been designed for this duty and shall have demonstrable

characteristics of performance and reliability acceptable to the authority having jurisdiction.

5.6.4.5.6 Batteries shall be prepared for use according to the battery manufacturer's instructions.

5.6.4.6* Automatic Battery Charger. In addition to the prime mover– (engine-) driven charger required in

5.6.3.6.1, a battery charger(s), as required in Table 5.6.4.2, shall be supplied for maintaining a charge on both the

starting and control battery unit.

5.6.4.7 All chargers shall include the following characteristics, which are to be accomplished without manual

intervention (i.e., manual switch or manual tap changing):

(1) At its rated voltage, the charger shall be capable of delivering energy into a fully discharged battery unit

without damaging the battery.

(2) The charger shall be capable of returning the fully discharged battery to 100 percent of its ampere-hour

rating within the time specified in Table 5.6.4.2, item (f).

(3) As specified in Table 5.6.4.2, item (e), meters with an accuracy within 5 percent of range shall be furnished.

(4) The charger shall be permanently marked with the

following:

(a) Allowable range of battery unit capacity

(b) Nominal output current and voltage

(c) Sufficient battery-type data to allow replacement

batteries to be obtained

(5) The battery charger output and performance shall be

compatible with the batteries furnished.

5.6.5 Control Functions.

5.6.5.1 A control panel shall be provided and shall contain the following:

(1) Automatic remote start capability

(2) “Run-off-automatic” switch

(3) Shutdowns as required by 5.6.5.2(3)

(4) Alarms as required by 5.6.5.2(4)

(5) Controls as required by 5.6.5.2(5)

5.6.5.2 Where a control panel is mounted on the energy converter, it shall be mounted by means of antivibration

shock mounts, if required, to maximize reliability. An automatic control and safety panel shall be a part of the

EPS containing the following equipment or possess the following characteristics, or both:

(1) Cranking control equipment to provide the complete cranking cycle described in 5.6.4.2 and required by Table

5.6.4.2

(2) Panel-mounted control switch(es) marked “run–off–automatic” to perform the following functions:

(a) Run: Manually initiate, start, and run prime mover

(b) Off: Stop prime mover or reset safeties, or both

(c) Automatic: Allow prime mover to start by closing a remote contact and stop by opening the remote contact

(3) Controls to shut down and lock out the prime mover under any of the following conditions:

(a) Failing to start after specified cranking time

(b) Overspeed

(c) Low lubricating-oil pressure

(d) High engine temperature (An automatic engine shutdown device for high lubricating-oil temperature shall

not be required.)

(e) Operation of remote manual stop station

(4) Individual alarm indication to annunciate any of the conditions listed in Table 5.6.5.2 and with the following

characteristics:

(a) Battery powered

(b) Visually indicated

(c) Have additional contacts or circuits for a common audible alarm that signals locally and remotely when any

of the itemized conditions occurs

(d) Have a lamp test switch(es) to test the operation of all alarm lamps

(5) Controls to shut down the prime mover upon removal of the initiating signal or manual emergency shutdown

(6) The ac instruments listed in 5.6.9.9

5.6.5.3 Engines equipped with a maintaining shutdown device (air shutdown damper) shall have a set of

contacts that monitor the position of this device, with local alarm indication and remote annunciation in

accordance with Table 5.6.5.2.

5.6.5.4 The control panel in 5.6.5.2(4) shall be specifically approved for either a Level 1 or a Level 2 EPS

consistent with the installation.

5.6.5.5 The cranking cycle shall be capable of being initiated by any of the following:

(1) Manual start initiation as specified in 5.6.5.2(2)(a).

(2) Loss of normal power at any automatic transfer switch (ATS) considered a part of the EPSS. Prime mover

shall start upon closing of a remote switch or contacts and shall stop, after appropriate time delays, when switch

or contacts are opened.

(3) Clock exerciser located in an ATS or in the control panel.

(4) Manually operated (test) switch located in each ATS that simulates a loss of power and causes automatic

starting and operation until this switch is reset, to cause the engine circuit to duplicate its functions in the same

manner commercial power is restored after a true commercial power failure.

5.6.5.6* All installations shall have a remote manual stop station of a type to prevent inadvertent or unintentional

operation located outside the room housing the prime mover, where so installed, or elsewhere on the premises

where the prime mover is located outside the building.

5.6.5.6.1 The remote manual stop station shall be labeled.

5.6.6* Remote Controls and Alarms. A remote, common audible

alarm shall be provided as specified in 5.6.5.2(4).

5.6.6.1 Alarms and annunciation shall be powered by the prime mover starting battery unless operational

constraints make this impracticable. In that circumstance an alternate source from the EPS, such as a storage

battery, UPS, or branch circuit supplied by the EPSS, shall be permitted.

5.6.6.2 The following annunciation shall be provided at a minimum:

(1) For Level 1 EPS, local annunciation and facility remote annunciation, or local annunciation and network

remote annunciation

(2) For Level 2 EPS, local annunciation

5.6.6.3 For the purposes of defining the types of annunciation in 5.6.6.2, the following shall apply:

(1) Local annunciation is located on the equipment itself or within the same equipment room.

(2) Facility remote annunciation is located on site but not within the room where the equipment is located.

(3) Network remote annunciation is located off site.

5.6.6.4 An alarm-silencing means shall be provided, and the panel shall include repetitive alarm circuitry so that,

after the audible alarm has been silenced, it reactivates after the fault condition has been cleared and has to be

restored to its normal position to be silenced again.

5.6.6.5 In lieu of the requirement in 5.6.6.4, a manual alarm silencing means shall be permitted that silences the

audible alarm after the occurrence of the alarm condition, provided such means do not inhibit any subsequent

alarms from sounding the audible alarm again without further manual action.

5.6.7 Prime Mover Cooling Systems. Cooling systems for prime movers shall be either forced-air or natural

convection, liquid-cooled, or a combination thereof.

Table 5.6.5.2 Safety Indications and Shutdowns

5.6.7.1 Forced-air-cooled diesel or otto cycle engines shall have an integral fan selected to cool the prime mover

under full load conditions.

5.6.7.2 Liquid-cooled prime movers for Level 1 applications shall be arranged for closed-loop cooling and consist

of one of the following types:

(1) Unit-mounted radiator and fan

(2) Remote radiator

(3) Heat exchanger (liquid-to-liquid)

5.6.7.3 Cooling systems shall prevent overheating of prime movers under conditions of highest anticipated

ambient temperature at the installed elevation (above sea level) when fully loaded.

5.6.7.4* Power for fans and pumps on remote radiators and heat exchangers shall be supplied from a tap at the

EPS output terminals or ahead of the first load circuit overcurrent protective device.

5.6.7.5 The secondary side of heat exchangers shall be a closed-loop cycle, that is, one that recycles the cooling

agent






(2) Remote radiator







agent.

5.6.7.6 The installed EPS cooling system shall be designed to cool the prime mover at full-rated load while

operating in the particular installation circumstances of each EPS.

5.6.7.7 A full-load on-site test shall not result in activation of high-temperature pre-alarm or high-temperature

shutdown.

5.6.7.8 For EPSS cooling systems requiring intermittent or continuous waterflow or pressure, or both, a utility,

city, or other water supply service shall not be used.

5.6.7.9 The EPSS cooling system shall be permitted to use utility or city water for filling or makeup water.

5.6.7.10 Design of the EPS cooling system shall consider the following factors:

(1) Remote radiator or heat exchanger sizing

(2) Pipe sizing

(3) Pump sizing

(4) Sufficient shutoffs to isolate equipment to facilitate maintenance

(5) The need for and sizing of de-aeration and surge

(6) Drain valves for cleaning and flushing the cooling system

(7) Type of flexible hoses between the prime mover and the cooling system piping

5.6.8 Prime Mover Exhaust Piping. Where applicable, the exhaust system shall include a muffler or silencer sized

for the unit and a flexible exhaust section.

5.6.9 Generators, Exciters, and Voltage Regulators. Generators shall comply with Article 445 of NFPA 70,

National Electrical Code, and with the requirements of 5.6.9.1 through 5.6.9.9.

5.6.9.1* The generator shall be of drip-proof construction and have amortisseur windings.

5.6.9.2 The generator shall be suitable for the environmental conditions at the installation location.

5.6.9.3 The generator systems shall be factory tested as a unit to ensure operational integrity of all of the

following:

(1) Generator

(2) Exciter

(3) Voltage regulator

5.6.9.4 EPS voltage output, or the output of the transformer immediately down-line from the EPS, at full load

shall match the nominal voltage of the normal source at the transfer switch(es).

5.6.9.5 Exciters, where furnished, shall be of either the rotating type or the static type.

5.6.9.6 Voltage regulators shall be capable of responding to load changes to meet the system stability

requirements of 5.6.9.8.

5.6.9.7 If the system stability requirements of 5.6.9.8 cannot be accomplished, anti-hunt provisions shall be

included.

5.6.9.8 Generator system performance (i.e., prime mover, generator, exciter, and voltage regulator, as applicable

when prototype tested as specified in 5.2.1.2) shall be as follows:

(1) Stable voltage and frequency at all loads shall be provided to full-rated loads.

(2) Values consistent with the user's needs for frequency droop and voltage droop shall be maintained.

(3) Voltage dip at the generator terminals for the maximum anticipated load change shall not cause disruption or

relay dropout in the load.

(4) Frequency dip and restoration to steady state for any sudden load change shall not exceed the user's

specified need.

5.6.9.9 The generator instrument panel for Level 1 applications shall contain the following:

(1) An ac voltmeter(s) for each phase or a phase selector switch

(2) An ac ammeter(s) for each phase or a phase selector switch

(3) A frequency meter

(4) A voltage-adjusting feature to allow ± 5 percent voltage adjustment

5.6.10 Miscellaneous Requirements.

5.6.10.1 Where applicable, the prime mover and generator shall be factory mounted on a common base, rigid

enough to maintain the dynamic alignment of the rotating element of the system prior to shipment to the

installation site.

5.6.10.2 A certification shall be supplied with the unit that verifies the torsional vibration compatibility of the

rotating element of the prime mover and generator for the intended use of the energy converter.

5.6.10.3* Vibration isolators shall be furnished where necessary to minimize vibration transmission to the

permanent structure.

5.6.10.4 The manufacturer of the EPS shall submit complete schematic, wiring, and interconnection diagrams

showing all terminal and destination markings for all EPS equipment, as well as the functional relationship

between all electrical components.

5.6.10.5 The energy converter supplier shall stipulate compliance and performance with this standard for the

entire unit when installed.

5.6.10.6 Where requested, the short circuit current capability at the generator output terminals shall be

furnished.

5.7 Fuel Cell System Equipment

5.7.1 General. Fuel cell systems and accessories shall comply with NFPA 853, Standard for the Installation of

Stationary Fuel Cell Power Systems, except as modified in this standard.

5.7.1.1* Fuel cells are classified by the type of electrolyte used (see 5.2.4). A5.7.1.1 There is a difference in start-up ramp time to full power based on the fuel cell type ranging from seconds to hours. During start-up, fuel cells have an average power output until they reach full power. If needed, additional power supplied from another source, such as a battery or ultra-capacitor, assists with powering the intended load during this time. Fuel cell systems that require high operating temperatures ramp slowly until they

reach full power and an additional start-up power source is not necessary. For these types of fuel cells, they are typically run continuously in order to provide emergency power in the required time period.

5.7.2 Fuel Cell System Ratings. Proper derating factors, such as altitudes, ambient temperature, fuel energy

content, accessory losses, and site conditions as recommended by the manufacturer of the fuel cell system shall

be used in determining whether or not the fuel cell system meets the connected load requirements.

5.7.3 Fuel Cell System Accessories.

5.7.3.1 Fuel Cell System controls/power conditioning systems shall maintain a bandwidth of rated frequency for

any constant load (steady-state condition) that is compatible with the load.




5.7.3.2 Solenoid valves, where used in the fuel line from the supply closest to the fuel cell system and in water-

cooling lines, shall operate from battery voltage.


provided.



5.7.3.3 The fuel cell system shall be provided with the following instruments when necessary:



(3) Battery-charging meter indicating performance of fuel cell system powered battery charging means

(4) Other instruments as recommended or provided by the fuel cell system manufacturer where required for

maintenance

5.7.3.4 The instruments required in 5.7.3.3(1) through 5.7.3.3(4) shall be placed on an enclosed panel, located in

proximity to or on the fuel cell system, in a location that allows maintenance personnel to observe them readily.

5.7.3.5 All external wiring for connections to the fuel cell system and its parts, if applicable, shall be in

accordance with Article 692 of NFPA 70.

5.7.3.6 Where applicable, the fuel cell system set shall be fitted with an integral accessory battery charger,

powered by the fuel cell system and automatic controls for charging and maintaining the starting battery unit

(and control battery, where used) in a fully charged condition during a running condition.

Commented [CP5]: Should this be part of Annex A?

Commented [CP6]: Need clarification on the intent of this requirement. Why does the valve need to operate from battery voltage?

Commented [CP7]: Need clarification on intent of this requirement. Is it that a manual bypass valve is required if an electric valve is the primary one?

Commented [CP8]: Can this be the main fuel line valve to the overall fuel cell system?

Commented [CP9]: Not sure of the intent of this valve. It is not requiring a fuel bypass valve for fuel cell systems, correct? Fuel cell systems that are continuously running normally only have one source of fuel, so they primarily have a fuel shutoff valve, not a fuel bypass valve. Also, emergency shutdown of the system, not just fuel?

Formatted: Highlight

Commented [CP10]: Some fuel cell systems are monitored remotely 24/7 and run time data is collected off-site. SOFC are run 24/7 from pipeline natural gas, so not sure if hour meter is needed.

Commented [CP11]: Could be monitored off-site.


Commented [CP12]: If this information is monitored off-site, this panel would not be necessary. In the case of the Bloom Energy system, maintenance personnel are BE field service staff and they monitor the system from a laptop. Customers also have limited access viewing capability of their system’s operation.


5.7.4 Fuel Cell System Starting Equipment.

5.7.4.1* Starting Systems. Where applicable, starting shall be accomplished using a stored energy starting

system.

A5.7.4.1 Some fuel cell systems use power from the utility grid for start-up until the fuel cell system is up to

operational status, then it disconnects from grid power and runs independently of the grid.


recommended by the manufacturer of the fuel cell system and subject to approval of the authority having



(3) Where the stored energy system has the capacity to handle the intended loads until the fuel cell system is

operating

(4) Where the stored energy system has a “black start” capability in addition to normal discharge capability.

5.7.4.3.1 Number of Batteries. Where applicable, a fuel cell system shall be provided with batteries for startup

until the fuel cell system is operating to provide the necessary power to the loads. The fuel cell system shall be

provided with one of the following:

(1) Storage battery units as specified in Table 5.7.4.2, or

(2) Battery or capacitor storage systems that are either incorporated as part of the fuel cell system or installed

as a separate accessory such as a battery rack or storage system.

Table 5.7.4.2 Fuel Cell Starting Equipment Requirements

Fuel Cell Starting Equipment Requirements

____________________________________________________________________________________________________

Level 1 Level 2

(a) Battery Units X X

(b) Battery Certification X X (for other than LA and Nickel)

(c) Power to load 45 sec 45 sec

(d) Automatic battery charger (BMS control) X X

(e) Maximum Recharge time 24 H 36 H

(f) Low battery voltage alarm contacts X X

X: Required. O: Optional

5.7.4.4* Size of Batteries. A battery unit or other storage system provided for startup power for a fuel cell

system shall be sized to provide power to the necessary loads until the fuel cell power system is operating.

5.7.4.5 Type of Battery. The battery shall be of the nickel cadmium, lead-acid type or as noted in 5.7.4.5.3.

Commented [CP13]: Some FC systems use power from the grid for start-up until the FC is up to Balance of Plant status, then it disconnects from grid power and runs independently on NG.

Commented [FLB14R13]: I added Chris explanation above with a few tweaks as annex material.

Commented [FLB15]: Get rid of old technology specific criteria. BMS control that is evaluated per

5.7.4.5.1 Lead-acid batteries shall be furnished as charged when wet. Drain-dry batteries or dry-charged lead-




5.7.4.5.3 In addition to nickel cadmium and lead acid batteries, fuel cell systems may utilize other technology

batteries (e.g. lithium ion) or storage capacitor technology for starting applications. These other storage system

technologies shall be listed to UL 1973.

5.7.4.5.4The manufacturer shall provide installation, operation, and maintenance instructions for the batteries in

accordance with their listing.

5.7.4.5.5 Batteries or capacitor units shall not be installed until their charging mechanism is installed if separate

from the battery or capacitor unit.

5.7.4.5.6 All start up storage systems used in this service shall have been designed for this duty and shall have

demonstrable characteristics of performance and reliability acceptable to the authority having jurisdiction.

5.7.4.5.7 Batteries or capacitors shall be prepared for use according to the battery/capacitor manufacturer's

instructions.

5.7.4.6 Automatic Battery Charger. A battery charger(s), as required in Table 5.7.4.2, shall be supplied for

maintaining a charge on both starting and control battery units as applicable to the fuel cell system.






rating within the time specified in Table 5.7.4.2, item (e).

(3) For float type chargers, meters with an accuracy within 5 percent of range shall be furnished.

(4) The charger, if a separate accessory for charging lead acid or Ni-cad batteries, shall be permanently marked

with the following:



(c) Sufficient battery-type data to allow replacement batteries to be obtained

(5) The battery charger output and performance shall be compatible with the batteries furnished.


5.7.5.1 An on-site control panel or remote monitoring control system shall be provided and shall contain the

following:

Commented [CP16]: A remote monitoring control system may be offsite and a panel may not be a required part of the fuel cell system. Items 3-5 apply to FC systems that run continuously.


(2) “Run-off-automatic” switch function




5.7.5.2 An automatic control and safety panel or remote monitoring control system shall be a part of the EPS

containing the following equipment or possess the following characteristics, or both:

(1) Panel-mounted control switch(es) marked “run–off–automatic” to perform the following functions for quick-

start fuel cell power systems:

(a) Run: Manually initiate, start of fuel cell system

(b) Off: Stop fuel cell system or reset safeties, or both

(c) Automatic: Allow fuel cell system to start by closing a remote contact and stop by opening the remote

contact

(2) Controls to shut down and lock out the fuel cell system under any of the following conditions:

(a) Failing to start after specified time

(b) Abnormal conditions including high temperatures

(c) Operation of remote manual stop station

(3) Individual alarm indication on a control panel to annunciate any of the conditions listed in Table 5.7.5.2 and

with the following

characteristics:

(a) Battery powered


(c) Have additional contacts or circuits for a common audible alarm that signals locally and remotely

when any of the itemized conditions occurs


(54) Controls to shut down the fuel cell system upon removal of the initiating signal or manual emergency

shutdown

5.7.5.3 (reserved)

5.7.5.4 The control panel or remote monitoring control system in 5.7.5.2(4) shall be specifically approved for

either a Level 1 or a Level 2 EPS consistent with the installation.

5.7.5.5 The startup operation shall be capable of being initiated by any of the following:

(1) Manual start initiation as specified in 5.7.5.2(2)(a) for quick start-up fuel cell systems.

(2) Loss of normal power at any automatic transfer switch (ATS) considered a part of the EPSS. The fuel cell

system shall start-up or switch power to the load upon closing of a remote switch or contacts and shall stop,

after appropriate time delays, when switch or contacts are opened.



starting and operation until this switch is reset, to cause the fuel cell system circuit to duplicate its functions in

the same manner commercial power is restored after a true commercial power failure.

Commented [CP17]: For FC systems that are running continuously in order to pick up the load when needed, this function should not be required. Maybe add a comment “for quick start-up fuel cell systems”.

Commented [CP18]: The word “function” is included for gen-sets. In the case of FC systems that are running continuously, this should not be necessary.

Commented [CP19]: This is a FC 1 requirement

Commented [CP20]: Need to add some separate requirements for remote monitoring control system

Commented [CP21]: Is “approved” equivalent to listed, or is it an AHJ’s decision?

Commented [CP22]: Not sure what this is.

Commented [CP23]: Need clarification on this.

5.7.5.6* All installations shall have a remote manual stop station of a type to prevent inadvertent or

unintentional operation located outside the room housing the fuel cell system, where so installed, or elsewhere

on the premises where the fuel cell system is located outside the building.


5.7.6* Remote Controls and Alarms. A remote, common audible alarm shall be provided as specified in

5.7.5.2(4). Remote controls and alarms for fuel cell systems shall be in accordance with 5.6.6.1 through 5.6.6.5

except as noted below.

5.7.6.1 Alarms and annunciation need not be powered by a starter battery if the fuel cell system does not rely

upon one (i.e. is under continuous operation).

5.7.7 Fuel Cell Cooling Systems. Cooling systems for fuel cell systems shall be either forced-air or natural


Commented [CP24]: If remote monitored, the alarm is for the monitoring station, correct?

Commented [CP25]: Should not be a requirement if a fuel cell system is run continuously and doesn’t use a starting battery.

Commented [FLB26R25]: Revised wording, as 5.6.6.1 allows options other than starting batteries. Changed statement to address continuously running fuel cell systems that do not employ a starting battery.

Public Comment No. 36-NFPA 110-2020 [ Section No. 5.2.4 ]

5.2.4

Rotating

EPS

5.2.4.1 EPS utilizing R r otating equipment shall consist of a generator driven by one of the following prime movertypes:


(2) Diesel cycle


5.2.4.

1

Other

2 EPS utilizing fuel cell systems shall consist of one or more of the following types:




(4) Phosphoric acid (PAFC )

(5) Alkaline (AFC)

5.2.4. 2 . 3 For EPS utilizing rotating equipment, O o ther types of prime movers and their associated equipmentmeeting the applicable performance requirements of this standard shall be permitted, if acceptable to the authorityhaving jurisdiction.

5.2.4. 2

. 3 Where used for Level 1 applications, the a prime mover shall not mechanically drive any equipment otherthan its operating accessories and its generator . A fuel cell system shall not energize any other equipment other thanits operating accessories necessary to provide power for the Level 1 application .









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Street Address:

City:

State:

Zip:


Committee: EPS-AAA


5 of 120 5/7/2020, 4:56 PM






FC1 .











(2) Water pump



(5) Air filter(s)


manufacturer



(1) Short circuits







5.2.4 EPS


types:


(2) Diesel cycle







(5) Alkaline (AFC)


































































provided.









maintenance













5.6.3.6.



starting system.




installation site.






















_________________________________________________________________________________________

Level 1 Level 2








dc ammeter X X

dc voltmeter X X



______________________________________________________________________________



























following:


















5.6.4.2







(b) Overspeed



not be required.)



characteristics:

(a) Battery powered
































remote annunciation




















(2) Remote radiator







agent






(2) Remote radiator







agent.




shutdown.






(2) Pipe sizing

(3) Pump sizing












following:

(1) Generator

(2) Exciter








included.








specified need.









installation site.











furnished.


















provided.








maintenance





















system.








operating










____________________________________________________________________________________________________

Level 1 Level 2




























instructions.











with the following:







following:














contact






with the following

characteristics:

(a) Battery powered






shutdown

5.7.5.3 (reserved)



















Public Comment No. 37-NFPA 110-2020 [ New Section after 5.2.5 ]

TITLE OF NEW CONTENT 5.2.5.1

5.2.5.1 A fuel cell system EPS shall also be installed in accordance with NFPA 853, Installation Standard forStationary Fuel Cell Power Systems .

Renumber exiting 5.2.5.1 to 5.2.5.2











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Street Address:

City:

State:

Zip:


Committee: EPS-AAA


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TITLE OF NEW CONTENT 5.3.1.1

5.3.1.1 A fuel cell system type EPS shall be provided with a thermal management system determined sufficient inaccordance with its listing and intended installation location for cold start , if applicable CP1] and load acceptance forthe type of EPSS.





Related Item

• CI 9


This PC has not been submitted yet


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